Upconversion luminescence of Al{sub 2}O{sub 3}-SiO{sub 2}:Ce{sup 3+} glass by femtosecond laser irradiation

Journal Article · Mon Oct 18 04:00:00 EDT 2004 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.1808234· OSTI ID:20634331

Hongpeng, You; Hayakawa, Tomokatsu; Nogami, Masayuki ^[1]

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1. Department of Materials Science and Engineering, Nagoya Institute of Technology, Showa Nagoya, 466-8555 (Japan)

Near-infrared to visible upconversion luminescence was observed in a sol-gel processed Al{sub 2}O{sub 3}-SiO{sub 2} glass containing Ce{sup 3+} ions under femtosecond laser irradiation. The optical properties of the glasses reveal that the upconversion luminescence comes from the 5d{yields}4f transition of the Ce{sup 3+} ions. The relationship between the intensity of the Ce{sup 3+} emission and the pump power reveals that a three-photon absorption predominates in the conversion process from the near-infrared into the blue luminescence. The analysis of the upconversion mechanism suggests that the upconversion luminescence may come from a three-photon simultaneous absorption that leads to a population of the 5d level in which the characteristic luminescence occurs.

• OSTI ID: 20634331
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 16 Vol. 85; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION
ALUMINIUM OXIDES
CERIUM IONS
DOPED MATERIALS
GLASS
ION IMPLANTATION
IRRADIATION
LASERS
MULTI-PHOTON PROCESSES
OPTICAL PROPERTIES
OPTICAL PUMPING
PHOTOLUMINESCENCE
PHOTONS
SILICON OXIDES
SOL-GEL PROCESS